Organism · Synapsids
Cynognathus crateronotus
Source time context (not species duration) · ≈ 252–201 Ma
Inferred life reconstruction
Cynognathus crateronotus
Overview
Cynognathus crateronotus is presented as a predatory cynodont from southern Africa. Large upper canines, the teeth behind them, and internal skull canals have been studied. Questions extend from jaw form to sensory organs.[1][2]
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Key facts
Cranial research addresses the positions of upper canines and the teeth behind them. Teeth differing in shape and location can be examined separately within one jaw.[2]
Time and place
A 2026 cranial study examined Anisian material from the Burgersdorp Formation in present-day South Africa. The Triassic as a whole spans roughly 250–200 million years ago. Separate postcranial research also compared limbs and vertebrae from another specimen.[2][3][4]
The time range describes source context, not the complete duration of this species.
Size, form and skeleton
Species-specific head descriptions explain the upper jaw, large upper canines, and the positions of the following tooth row. An associated humerus and vertebrae have been studied in separate specimen PVL3859. Cranial and postcranial material provide information from different sources.[2][3]
A 2022 study estimated a body mass of approximately 20 kg from the humerus of Cynognathus specimen PVL 3859. This estimate concerns one relatively small specimen.[5]
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Habitat and reproduction
What can canals within jaw bones reveal about sensation? Research on the maxillary canal discussed sensory organs through internal skull structures. Observations narrow from the external form of teeth to passages within bone.[2]
Fossil discovery
A 1999 study examined the humerus and vertebrae of PVL3859. In 2026, a study compared the maxillary canals of Cynognathus and Diademodon. Different questions connect postcranial bones with structures inside the head.[2][3]
References
- Natural History Museum, London — Cynognathus and synapsid collection material
- Benoit·Buffa·Day (2026) — The maxillary canal of Cynognathus
- Abdala (1999) — Postcranial bones of Cynognathus
- International Commission on Stratigraphy (2024) — Geological time chart
- 2022 · Body mass estimation in Triassic cynodonts
- Jasinoski et al. (2015) — Cranial growth in Thrinaxodon
- Hopson (1995) — Evolution of hands and feet in mammal relatives
- Fernandez et al. (2013) — Early Triassic skeletons found in a burrow
Research questions
What different information comes from visible teeth and canals inside bone? The tooth row reveals jaw organization, while the maxillary canal provides comparative clues related to sensation. Different scales of research reveal different information within the same head.[2]
Observation
Move your gaze from the large upper canine to the teeth behind it. Consider internal skull canals and separate limb and vertebral material as well to compare several body regions.[2][3]
Related organisms
Thrinaxodon liorhinusSynapsidsSource time context (not species duration) · ≈ 252–201 MaDifferent bodies among cynodonts
Explore the bodies and backgrounds of Cynognathus crateronotus and Thrinaxodon together. Cynognathus crateronotus: a predatory cynodont from southern Africa, studied for large upper canines, teeth behind them, and internal skull canals. Thrinaxodon: Thrinaxodon liorhinus is studied through skull growth, hands and feet, and skeletons within burrows, with clues ranging from small skulls to limb ends and preservation sites.